fdtd_pml_2d

一维等离子的FDTD的MATLAB程序，主要是等离子体光子晶体仿真。(One-dimensional FDTD plasma of the MATLAB program, mainly plasma photonic crystal simulation.)

在屏幕上出现一个圆心沿正弦虚线轨迹移动的实心圆。(In the center of a circle appears on the screen a dotted line along the sinusoidal trajectory moving solid round.)

说明：  该软件和代码实现的功能是对图象的加密和解密,运行环境是Xp+matlab,代码中有说明,很容易看明白.(the software code and the functions of the image of encryption and decryption, the environment is Xp Matlab, the code is described, it is easy to see to understand.)

图1为均衡带限信号所引起失真的横向或格型自适应均衡器(其中横向FIR系统长M=11), 系统输入是取值为±1的随机序列，其均值为零；参考信号；信道具有脉冲响应： 式中用来控制信道的幅度失真(W = 2～4, 如取W = 2.9,3.1,3.3,3.5等)，且信道受到均值为零、方差(相当于信噪比为30dB)的高斯白噪声的干扰。试比较基于下列几种算法的自适应均衡器在不同信道失真、不同噪声干扰下的收敛情况(对应于每一种情况,在同一坐标下画出其学习曲线): 1）横向/格-梯型结构LMS算法 2）横向/格-梯型结构RLS算法 并分析其结果。(Figure 1 is a band-limited signal caused balanced horizontal or lattice distortion adaptive equalizer (FIR system in which the lateral length M = 11), the system input is the value of a random sequence of ± 1, mean zero reference signal channel has impulse response: Wherein the amplitude of the distortion for the control channel (W = 2 ~ 4, and so as to take W = 2.9,3.1,3.3,3.5), and subjected to a channel with zero mean and variance (equivalent SNR is 30dB) Gaussian white noise. Compare the following types of algorithm-based adaptive equalizer in a different channel distortion, the convergence of different noise interference (corresponding to each situation, draw their learning curve in the same coordinate): 1) landscape/grid- LMS algorithm ladder structure 2) landscape/grid- RLS algorithm ladder structure And analyze the results.)

非常不错的QPSK在matlab中的仿真教程，文档中包含相关的所有代码(very good QPSK in the Matlab simulation Guide, the document contains all the related code!)

帮助新手规范C程序书写格式 帮助老手纠正错误的书写习惯 使程序效率更高(C program written to help novice standard format to help veterans to correct the wrong writing habits to make programs more efficient)

scrollbar重绘。很好的例子程序，可以用来学习一下。(scrollbar redrawn. Good example of a program that can be used to learn about.)

Simple Contact Information System

0.618算法，可以用VC运行出来，但没有MATLAB算法(function 0.618)

主要绘制了牛顿环的光强分布图，光强可在透射与反射箭转换。(The main draw of the Newton ring of light intensity distribution, light intensity can be converted in the transmission and anti-archery.)